artiq/soc/runtime/main.c

118 lines
2.5 KiB
C

#include <stdio.h>
#include <string.h>
#include <irq.h>
#include <uart.h>
#include <system.h>
#include <time.h>
#include <generated/csr.h>
#include "comm.h"
#include "elf_loader.h"
#include "exceptions.h"
#include "services.h"
#include "rtio.h"
#include "dds.h"
static unsigned char kcode[256*1024];
static struct symbol symtab[128];
static int _symtab_count;
static char _symtab_strings[128*16];
static char *_symtab_strptr;
static void symtab_init(void)
{
memset(symtab, 0, sizeof(symtab));
_symtab_count = 0;
_symtab_strptr = _symtab_strings;
}
static int symtab_add(const char *name, void *target)
{
if(_symtab_count >= sizeof(symtab)/sizeof(symtab[0])) {
comm_log("Too many provided symbols in object");
symtab_init();
return 0;
}
symtab[_symtab_count].name = _symtab_strptr;
symtab[_symtab_count].target = target;
_symtab_count++;
while(1) {
if(_symtab_strptr >= &_symtab_strings[sizeof(_symtab_strings)]) {
comm_log("Provided symbol string table overflow");
symtab_init();
return 0;
}
*_symtab_strptr = *name;
_symtab_strptr++;
if(*name == 0)
break;
name++;
}
return 1;
}
static int load_object(void *buffer, int length)
{
symtab_init();
return load_elf(
resolve_service_symbol, symtab_add,
buffer, length, kcode, sizeof(kcode));
}
typedef void (*kernel_function)(void);
static int run_kernel(const char *kernel_name, int *eid)
{
kernel_function k;
void *jb;
k = find_symbol(symtab, kernel_name);
if(k == NULL) {
comm_log("Failed to find kernel entry point '%s' in object", kernel_name);
return KERNEL_RUN_STARTUP_FAILED;
}
jb = exception_push();
if(exception_setjmp(jb)) {
*eid = exception_getid();
return KERNEL_RUN_EXCEPTION;
} else {
rtio_init();
flush_cpu_icache();
k();
exception_pop(1);
return KERNEL_RUN_FINISHED;
}
}
static void blink_led(void)
{
int i, ev, p;
p = identifier_frequency_read()/10;
time_init();
for(i=0;i<3;i++) {
leds_out_write(1);
while(!elapsed(&ev, p));
leds_out_write(0);
while(!elapsed(&ev, p));
}
}
int main(void)
{
irq_setmask(0);
irq_setie(1);
uart_init();
puts("ARTIQ runtime built "__DATE__" "__TIME__"\n");
dds_init();
blink_led();
comm_serve(load_object, run_kernel);
return 0;
}